easysocial-1.3.25.static.min.js v/s easysocial-1.3.25.optimized.min.js

Can you please explain the difference between the two versions of the scripts, are they having different functionality or are they same.

My site is loading easysocial-1.3.25.static.min.js and rather i would like to depend on easysocial-1.3.25.optimized.min.js as the size difference is big.

How can i let my site load 'optimized' version rather than 'static' version?

regards